her therapist showed her and her alter selves how to live with one another by showing them how to function and schedule their time. (G.L) MPD became know more after the movie Sybil became very popular. It is a true story about a woman named Shirley Ardell Mason whose mother physical and sexual abused her, while her father did nothing to stop the abuse. From the abuse that Sybil mother forced upon her, Sybil gained sixteen different personalities (Dryden-Edwards) to deal with the abuse. When a person